* {
    margin: 0;
    padding: 0;
}

.header img {
    vertical-align: bottom;
    margin-top: 7.5px;
    margin-bottom: 7.5px;
}

.header span {}

.header {
    margin-left: 20%;
    margin-right: 20%;
    line-height: 100px;
    height: 100px;
    background-color: aqua;
}

.header>span~span {
    margin-left: 10px;
    margin-right: 10px;
}

.header span:nth-of-type(1) {
    margin-left: 150px;
    margin-right: 10px;
}

.header span:nth-last-of-type(2) {
    margin-left: 50px;
}

.swipper {}


/* 
.other {
    margin-top: 2hc;
}


.other p {
    margin-top: 1px;
}

.other p:first-of-type {
    color:red;
}

.other p:nth-of-type(3) {
    color:skyblue;
}

a:link{
    color:pink;
}
a:hover{
    font-size:large;
    color:skyblue;
}

a:active{
    color:yellow;
    font-size:100px;
} */


/*
first-child: 不看标签顺序执行
first-of-type: 看标签顺序执行
nth 同理
*/


/*

"> ~" 要求相同父元素
*/


/* 
.header {
    background-color: rgb(0, 252, 197);
}

.p {
    color: black;
}

#pp {
    color: rgb(221, 65, 65);
}

p {
    color: rgb(38, 0, 255);
}

[id] {
    color: yellowgreen;
} */


/* 
id > 属性选择器 ==  class  > 元素选择器 >